An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Taylor KM, Irving PM.Taylor KM, et al. Among authors: irving pm.Nat Rev Gastroenterol Hepatol. 2011 Oct 4;8(11):646-56. doi: 10.1038/nrgastro.2011.172.Nat Rev Gastroenterol Hepatol. 2011.PMID: 21970871Review.